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CHEN Tiequn Wuhan Institute of Technology , Wuhan , ChinaVERPOEST I DER UYTTERE A Katholieke Universiteit , Leuven , Belgium
金属学报(英文版)
The fatigue behavior of quenched plus tempered carburized steel before crack initiation has been observed in tension-tension fatigue tests.It was found that fatigue softening and fatigue hardening coexist in this steel.A transition region near the ease depth of the steel divides the cross section of a round speeimen into two parts:the softened part outwards and the hardened part inwards.The degree of fatigue softening in the case and fatigue hardening in the core is increased with the maximum applied cyclic stress and the number of cycles.
关键词: carburized steel , null , null
黄帅 , 张国强 , 王毛球 , 谭红琳
钢铁研究学报
为探索不同渗碳层深度对重载齿轮钢疲劳性能的影响,利用旋转弯曲疲劳试验研究了18Cr2Ni2MoVNb重载齿轮钢未渗碳和渗碳试样的疲劳性能。结果表明：渗碳后渗碳层硬度升高,疲劳性能显著提高;随渗碳时间的延长,渗碳层深度增加,残余奥氏体含量增加,因此随渗碳层深度的增加,试验钢的疲劳性能呈先增加后降低的趋势;当渗碳层深度为1mm时,18Cr2Ni2MoVNb试验钢疲劳性能较好。
关键词: 渗碳钢 , 旋转弯曲疲劳 , 渗碳层深度 , 残余奥氏体
